The Fourth Industrial Revolution (4IR) has ushered in an era of technological advancements that profoundly impact various sectors, including renewable energy systems (RES). This paper critically examines the environmental implications of 4IR technologies, emphasizing the advantages and challenges associated with their integration into RES. Key technologies such as the Internet of Things (IoT), artificial intelligence (AI), big data, cloud computing, and cyber-physical systems can potentially enhance the efficiency, predictive maintenance, and overall management of renewable energy infrastructures. These innovations promise significant reductions in carbon emissions and operational costs while promoting sustainable energy consumption. However, the rapid deployment of these technologies also presents notable challenges, including increased electronic waste, higher energy consumption by data centres, and cybersecurity threats. This study highlights the need for rigorous assessment and strategic implementation of 4IR technologies to maximize their benefits while mitigating adverse environmental impacts. The findings underscore the importance of establishing comprehensive guidelines and policies. These are recommendations and necessary measures to ensure these technologies contribute positively to global sustainability goals. They are the guardrails that will steer us towards a more sustainable future.